Python config singleton

import yaml
import os
import easydict
import threading

CONFIGS = [
    '/etc/avgjoe/useful_stuff/config.yaml',
    '~/.config/avgjoe/useful_stuff/config.yaml',
    '~/.useful_stuff_config.yaml']


class Config:
    __cfg = None
    __lock = threading.Lock()

    @classmethod
    def get(cls):
        with cls.__lock:
            if cls.__cfg is None:
                cls.__cfg = Config.load()
        return cls.__cfg

    @staticmethod
    def load():
        for conf in CONFIGS:
            try:
                with open(os.path.expanduser(conf), 'r') as f:
                    cfg = easydict.EasyDict(yaml.safe_load(f))
                break
            except IOError as e:
                pass
        return cfg